Telephone line test probe



FIG. 1 is a top, front left side perspective view of a telephone line test probe showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a front elevation view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a right side elevation view thereof. 

The ornamental design for a telephone line test probe, substantially as shown and described. 